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VI.
PROTECTIONS
In order to ensure safe and failure-free operation, the controller is equipped with a range of protections.
1. Sensor protection.
If one of the sensors is damaged, an acoustic signal is activated and the following symbol
will appear on the right
hand side of the display. An additional icon informing the user which sensor is disconnected or damaged will flash in the
place of its temperature. In order to deactivate the alarm signal in case of error, press
EXIT
button.
2. Protection against collector overheating.
If the maximum (alarm) temperature is reached, the regulator switches to the so-called
collector overheat mode
and the
display shows a corresponding symbol
. The pump is enabled in order to cool down the collector until the
maximum tank temperature
is reached or until the collector temperature drops by the value of the
alarm hysteresis
(see:
SERVICE MENU > Solar Collector> Alarm Hysteresis
) In the case of two tanks, both of them are used to cool down the
overheated collector (at the same time or one by one, depending on the operation algorithm setting).
3. Heat tank protection.
In the event of collector overheating, each tank may be heated to no more than the pre-set maximum safe temperature.
After reaching this temperature, the pump of a given tank is disabled (in system configuration with two tanks and a valve,
the circulation is switched to the second tank).
4. Fuse.
The regulator is equipped with a WT 3.15A tube fuse-link protecting the network
.
NOTE
Higher amperage fuse should not be used as it may lead to controller damage.
VII.
SOFTWARE UPDATE
NOTE
Software update shall be conducted only by a qualified fitter. After the software has been updated, it is not
possible to restore previous settings.
In order to install new software, the controller must be unplugged from the power supply. Next, insert the flash drive with
the new software into the USB port. Connect the controller to the power supply.
